Creating firewall rules to allow FTP connections

975 pts.
Tags:
Firewalls
FTP
Network connectivity
Networking
SonicWALL
SonicWALL Pro 3060
Subnet mask
I need to create firewall rules to allow FTP connections from specific clients. I have their network address/subnet mask. How can I add this for all servers from my Sonicwall Pro 3060?

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Discuss This Question: 3  Replies

 
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  • jinteik
    usually if lets say point A(external) comes into your network, you will know the IP and also the port that is used and that will come into ur network then into your servers.
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  • petkoa
    Allowing FTP through a firewall is a tricky beast - Linux Kernel Netfilter Subsystem has a special helper for FTP tracking, since FTP protocol is quite specific: control connection is opened from ANY tcp port on the client to tcp port 21 on the server; after that for any transfer (even dir listing) a data connection is negotiated - from tcp port 20 to ANy port of the client; the passive transfer is alway initiated by the client, but a negotiating goes on all the same... So, the firewall helper reads the packet contents, where the connection ports are negotiated and dynamically opens them... Why don't consider using sftp - just open tcp port 22 to the client IPs and you get a secure transfers as a bonus...
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  • TeachMeIT
    [...] 2. Jinteik and Petkoa gave some pointers for creating firewall rules to allow FTP connections. [...]
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